Sul Kyung-gu

Sung-geun

Park Hae-il

Tae-sik

Yoon Je-moon

Chief Oh

Lee Byung-joon

Professor Heo

류혜영

Yeo-jeong

Jang So-yeon

Nurse

Lee Kyu-hyung

Cheol-Ju

박민수

Young Tae-sik

Son Young-soon

Sung-geun's Mother

Bae Sung-woo

President Baek

Son Sang-kyung

Big Guy

Jeon Kuk-hwan

President